 @charset "UTF-8";
 html,
 body,
 dl,
 dt,
 dd,
 ol,
 ul,
 h1,
 h2,
 h3,
 h4,
 h5,
 h6,
 pre,
 code,
 form,
 p,
 fieldset,
 legend,
 figure {
     margin: 0;
     padding: 0;
 }
 
 body {
     color: #353535;
     font: 16px/1.5 'Microsoft Yahei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
 }
 
 @media screen and (max-width: 500px) {
     html[resize] body {
         font-size: 14px;
     }
 }
 
 @media screen and (min-width: 1930px) {
     html[resize] body {
         font-size: 18px;
     }
 }
 
 *,
 *:before,
 *:after {
     box-sizing: border-box;
 }
 /* - 选择内容 */
 
 ::-moz-selection {
     color: #fff;
     background-color: rgba(0, 0, 0, .66);
 }
 
 ::selection {
     color: #fff;
     background-color: rgba(0, 0, 0, .66);
 }
 
 ::-webkit-scrollbar-thumb {
     background: #ccc;
     border-radius: 5px;
 }
 
 ::-webkit-scrollbar-track:hover {
     border-radius: 5px;
     background: rgba(0, 0, 0, .05);
 }
 
 body::-webkit-scrollbar-thumb {
     box-shadow: inset 1px 1px 0 rgba(0, 0, 0, .1), inset 0 -1px 0 rgba(0, 0, 0, .07);
 }
 
 body::-webkit-scrollbar-track:hover {
     border-radius: 0;
     box-shadow: inset 1px 0 0 rgba(0, 0, 0, .1);
 }
 
 .bk-scroll-hover::-webkit-scrollbar {
     display: none;
 }
 
 .bk-scroll-hover:hover::-webkit-scrollbar {
     display: inherit;
 }
 /* 1 - 容器
-------------------------------- */
 
 .wrap {
     margin-left: auto;
     margin-right: auto;
     max-width: 1200px;
     padding: 0 1.25em;
     box-sizing: content-box;
 }
 
 .wrap.min {
     max-width: 800px;
 }
 
 .wrap.mid {
     max-width: 1000px;
 }
 
 .wrap.max {
     max-width: 1600px;
 }
 
 .wrap.full {
     max-width: 100%;
 }
 
 .wrap.thin {
     padding: 0 .75em;
 }
 
 .wrap.thick {
     padding: 0 1.5em;
 }
 
 .wrap.clear {
     padding-left: 0;
     padding-right: 0;
 }
 
 .clearfix:after {
     content: '';
     clear: both;
     display: block;
 }
 
 .overflow {
     overflow: auto;
 }
 /* 2 - 元素
-------------------------------- */
 
 h1 {
     font-size: 2em;
 }
 
 h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
     margin-bottom: 1rem;
 }
 
 h1:last-child,
 h2:last-child,
 h3:last-child,
 h4:last-child,
 h5:last-child,
 h6:last-child,
 p:last-child {
     margin-bottom: 0;
 }
 
 p {
     line-height: 1.8em;
     margin-bottom: 1em;
 }
 
 a {
     color: #3498db;
     text-decoration: none;
 }
 
 a:hover {
     color: #ffc670;
 }
 
 abbr[title] {
     cursor: help;
     text-decoration: none;
     border-bottom: 1px dotted;
 }
 
 em,
 mark,
 kbd {
     padding: 0 .5em;
     border-radius: .5em;
     display: inline-block;
 }
 
 em {
     color: #fff;
     font-style: normal;
     background: #3498db;
 }
 
 kbd {
     color: #fff;
     font-size: 90%;
     background: #333;
     font-family: 'Consolas', 'Courier New', monospace, "微软雅黑";
 }
 
 audio {
     vertical-align: middle;
 }
 
 img,
 svg,
 video {
     height: auto;
     max-width: 100%;
     vertical-align: middle;
 }
 /* - 文章 */
 
 article {
     word-break: break-all;
 }
 
 article>* {
     margin-bottom: 1em;
 }
 
 article>*:last-child {
     margin-bottom: 0;
 }
 
 article h1,
 article h2,
 article h3 {
     font-size: 1.2em;
 }
 
 article h4,
 article h5,
 article h6 {
     font-size: 1.1em;
     font-weight: bold;
 }
 /* - 按钮 */
 
 .btn {
     outline: 0;
     font: inherit;
     color: inherit;
     cursor: pointer;
     background: rgb(66, 108, 124);
     user-select: none;
     border-radius: 4px;
     padding: .8em 1.5em;
     display: inline-block;
     border: 1px solid transparent;
 }
 
 .btn:hover {
     color: inherit;
 }
 
 .btn:active {
     background: #ddd;
 }
 
 .btn.large {
     font-size: 1.2em;
     padding: 1em 2.5em;
 }
 
 .bk-form input.switch {
     width: 4em;
     height: 2em;
     float: none;
     cursor: pointer;
     background: #eee;
     position: relative;
     border-radius: 50px;
     border: 1px solid #ddd;
     box-sizing: content-box;
     transition: border .3s, background .3s;
 }
 
 .bk-form input.switch:before {
     margin: 0;
     border: 0;
     width: 2em;
     height: 2em;
     content: '';
     display: block;
     box-shadow: none;
     background: #fff;
     position: absolute;
     border-radius: 100%;
     transition: transform 0.3s;
 }
 
 .bk-form input.switch:after {
     content: normal;
 }
 
 .bk-form input.switch:checked {
     box-shadow: none;
     background: #3498db;
     border-color: #3498db;
 }
 
 .bk-form input.switch:checked:before {
     background: #fff;
     transform: translateX(2em);
 }
 
 .bk-form fieldset {
     border: none;
     cursor: default;
     margin-bottom: 2em;
 }
 
 .bk-form fieldset:last-child {
     margin-bottom: 0;
 }
 
 .bk-form fieldset>* {
     margin-bottom: 1em;
 }
 
 .bk-form fieldset>*:last-child {
     margin-bottom: 0;
 }
 
 .bk-form.inline fieldset label,
 .bk-form fieldset.inline label {
     float: left;
     display: block;
     margin: 0 1em .5em 0;
 }
 
 .bk-form fieldset.inline:after {
     content: '';
     clear: both;
     display: block;
 }
 
 .bk-table {
     width: 100%;
     overflow-x: auto;
     overflow-y: hidden;
     border-radius: 5px;
 }
 
 table {
     border: 0;
     width: 100%;
     max-width: 100%;
     border-collapse: collapse;
 }
 
 table th,
 table td {
     padding: .75em;
     text-align: left;
     vertical-align: top;
 }
 
 table>thead>tr {
     border-bottom: 2px solid #ccc;
 }
 
 table>tbody>tr>td {
     border-bottom: 1px solid #ddd;
 }
 
 table>tbody>tr:last-child>td {
     border-bottom: 0;
 }
 
 table>tbody>tr {
     transition: background .3s;
 }
 
 table>tbody>tr:hover {
     background: #eee;
 }
 
 table>thead>tr>th,
 table>tbody>tr>th,
 table>tfoot>tr>th,
 table>thead>tr>td,
 table>tbody>tr>td,
 table>tfoot>tr>td {
     white-space: nowrap;
 }
 
 table.fill>thead>tr {
     border-bottom: none;
 }
 
 table.fill>thead>tr>th,
 table.fill>thead>tr>td {
     color: #fff;
     padding: 1em .75em;
 }
 
 table.fill>tbody {
     border-left: 1px solid #ddd;
     border-right: 1px solid #ddd;
     border-bottom: 1px solid #ddd;
 }
 
 table.fill>tbody>tr:nth-child(2n)>th,
 table.fill>tbody>tr:nth-child(2n) {
     background: #f7f7f7;
 }
 
 .row {
     display: flex;
     flex-wrap: wrap;
     margin-left: -1.25em;
     margin-right: -1.25em;
 }
 
 .row.thin {
     margin-left: -1em;
     margin-right: -1em;
 }
 
 .row.full {
     margin-left: 0;
     margin-right: 0;
 }
 
 .row.scrollable {
     overflow: auto;
     margin-left: 0;
     margin-right: 0;
     flex-wrap: nowrap;
 }
 /* -- 网格间距 */
 
 .row [class*="col-"] {
     position: relative;
     padding-left: 1.25em;
     padding-right: 1.25em;
 }
 
 .row.thin [class*="col-"] {
     padding-left: 1em;
     padding-right: 1em;
 }
 
 .row.full [class*="col-"] {
     padding: 0;
     margin-bottom: 0;
 }
 /* --- 手机 */
 
 @media screen and (min-width: 600px) {
     .row .col-s-1 {
         -ms-flex: 0 0 8.3333%;
         flex: 0 0 8.3333%;
         max-width: 8.3333%;
     }
     .row .col-s-2 {
         -ms-flex: 0 0 16.6666%;
         flex: 0 0 16.6666%;
         max-width: 16.6666%;
     }
     .row .col-s-3 {
         -ms-flex: 0 0 25%;
         flex: 0 0 25%;
         max-width: 25%;
     }
     .row .col-s-4 {
         -ms-flex: 0 0 33.3333%;
         flex: 0 0 33.3333%;
         max-width: 33.3333%;
     }
     .row .col-s-5 {
         -ms-flex: 0 0 41.3333%;
         flex: 0 0 41.6666%;
         max-width: 41.6666%;
     }
     .row .col-s-6 {
         -ms-flex: 0 0 50%;
         flex: 0 0 50%;
         max-width: 50%;
     }
     .row .col-s-7 {
         -ms-flex: 0 0 58.3333%;
         flex: 0 0 58.3333%;
         max-width: 58.3333%;
     }
     .row .col-s-8 {
         -ms-flex: 0 0 66.6666%;
         flex: 0 0 66.6666%;
         max-width: 66.6666%;
     }
     .row .col-s-9 {
         -ms-flex: 0 0 75%;
         flex: 0 0 75%;
         max-width: 75%;
     }
     .row .col-s-10 {
         -ms-flex: 0 0 83.3333%;
         flex: 0 0 83.3333%;
         max-width: 83.3333%;
     }
     .row .col-s-11 {
         -ms-flex: 0 0 91.6666%;
         flex: 0 0 91.6666%;
         max-width: 91.6666%;
     }
     .row .col-s-12 {
         -ms-flex: 0 0 100%;
         flex: 0 0 100%;
         max-width: 100%;
     }
 }
 /* --- 平板 */
 
 @media screen and (min-width: 900px) {
     .row .col-m-1 {
         -ms-flex: 0 0 8.3333%;
         flex: 0 0 8.3333%;
         max-width: 8.3333%;
     }
     .row .col-m-2 {
         -ms-flex: 0 0 16.6666%;
         flex: 0 0 16.6666%;
         max-width: 16.6666%;
     }
     .row .col-m-3 {
         -ms-flex: 0 0 25%;
         flex: 0 0 25%;
         max-width: 25%;
     }
     .row .col-m-4 {
         -ms-flex: 0 0 33.3333%;
         flex: 0 0 33.3333%;
         max-width: 33.3333%;
     }
     .row .col-m-5 {
         -ms-flex: 0 0 41.3333%;
         flex: 0 0 41.6666%;
         max-width: 41.6666%;
     }
     .row .col-m-6 {
         -ms-flex: 0 0 50%;
         flex: 0 0 50%;
         max-width: 50%;
     }
     .row .col-m-7 {
         -ms-flex: 0 0 58.3333%;
         flex: 0 0 58.3333%;
         max-width: 58.3333%;
     }
     .row .col-m-8 {
         -ms-flex: 0 0 66.6666%;
         flex: 0 0 66.6666%;
         max-width: 66.6666%;
     }
     .row .col-m-9 {
         -ms-flex: 0 0 75%;
         flex: 0 0 75%;
         max-width: 75%;
     }
     .row .col-m-10 {
         -ms-flex: 0 0 83.3333%;
         flex: 0 0 83.3333%;
         max-width: 83.3333%;
     }
     .row .col-m-11 {
         -ms-flex: 0 0 91.6666%;
         flex: 0 0 91.6666%;
         max-width: 91.6666%;
     }
     .row .col-m-12 {
         -ms-flex: 0 0 100%;
         flex: 0 0 100%;
         max-width: 100%;
     }
 }
 /* --- 电脑 */
 
 @media screen and (min-width: 1024px) {
     .row .col-l-1 {
         -ms-flex: 0 0 8.3333%;
         flex: 0 0 8.3333%;
         max-width: 8.3333%;
     }
     .row .col-l-2 {
         -ms-flex: 0 0 16.6666%;
         flex: 0 0 16.6666%;
         max-width: 16.6666%;
     }
     .row .col-l-3 {
         -ms-flex: 0 0 25%;
         flex: 0 0 25%;
         max-width: 25%;
     }
     .row .col-l-4 {
         -ms-flex: 0 0 33.3333%;
         flex: 0 0 33.3333%;
         max-width: 33.3333%;
         border-left: 1px solid #000;
     }
     .row .col-l-5 {
         -ms-flex: 0 0 41.3333%;
         flex: 0 0 41.6666%;
         max-width: 41.6666%;
     }
     .row .col-l-6 {
         -ms-flex: 0 0 50%;
         flex: 0 0 50%;
         max-width: 50%;
     }
     .row .col-l-7 {
         -ms-flex: 0 0 58.3333%;
         flex: 0 0 58.3333%;
         max-width: 58.3333%;
     }
     .row .col-l-8 {
         -ms-flex: 0 0 66.6666%;
         flex: 0 0 66.6666%;
         max-width: 66.6666%;
     }
     .row .col-l-9 {
         -ms-flex: 0 0 75%;
         flex: 0 0 75%;
         max-width: 75%;
     }
     .row .col-l-10 {
         -ms-flex: 0 0 83.3333%;
         flex: 0 0 83.3333%;
         max-width: 83.3333%;
     }
     .row .col-l-11 {
         -ms-flex: 0 0 91.6666%;
         flex: 0 0 91.6666%;
         max-width: 91.6666%;
     }
     .row .col-l-12 {
         -ms-flex: 0 0 100%;
         flex: 0 0 100%;
         max-width: 100%;
     }
 }
 /* -- 网格对齐方式 */
 
 .row>.left,
 .row>.right,
 .row>.top,
 .row>.bottom,
 .row>.center {
     display: flex;
     flex-direction: column;
 }
 
 .row>.center {
     align-items: center;
     justify-content: center;
 }
 
 .row>.center-fixed {
     text-align: center;
 }
 
 .row>.left {
     -webkit-box-align: start;
     align-items: flex-start;
 }
 
 .row>.right {
     -webkit-box-align: end;
     align-items: flex-end;
 }
 
 .row>.top {
     justify-content: flex-start;
 }
 
 .row>.bottom {
     justify-content: flex-end;
 }
 
 @media screen and (max-width: 900px) {
     .row>.to-center {
         align-items: center !important;
     }
 }